How to Jam New Seal on L3170 Front Axle?

[Mr Haney]

I got around to replacing the oil seal on my L3710's front axle today. It's not a bad job, EXCEPT for removing the metal part of the old seal and installing the new one. The metal ring is extremely tight on the axle, and it has rubber inside it to make the friction worse.

A guy on the web said to heat it for 30 seconds to 1 minute with a torch to make it slip off. This works, except it takes longer than he said.

Now I have the old part off. I am cleaning the axle to make sure no burned rubber messes up the new seal.

What is the best way to jam the new seal on there? The rubber part is no problem, but the part with a metal ring is very hard to push on. A Youtube dude says lube doesn't help.

I pushed it on a short distance just to see what it's like, but I am not willing to continue until I have better information, because getting it out if I screw it up will not be fun.

I'm thinking I should try to find a piece of pipe that fits the ring and use it to push the ring on the hydraulic press. I would think even PVC would work.

It turned out the inner bearing was wiped out. The cage was broken. Two new bearings will go in as soon as the seal is on.

 

[Mr Haney]

I was able to bop the seal onto the hub using a short PVC fitting to push it, so that's finished.

Now I'm confused about the torque on the screws and nuts on the axle cover. Kubota calls its parts certain things in its catalog and completely different things in the WSM.

The WSM says to torque the axle flange mounting screws and nuts to 17.4 to 20.2 Ft.lbs. It says to torque the axle flange mounting stud bolt (singular) to 8.7 to 11.5.

There are two nuts mounted on studs, and the rest of the fasteners are screws. I don't see any "mounting stud bolt," and I don't see any fastener that is only used once. I guess Kubota had its usual translation problems.

 

[whitetiger]

The stud itself is torqued to 11 ft lbs, but when you put the lock washer and nut on it, the nut torques to 20 ft lbs.

 

[Mr Haney]

Thank you. That's the opposite of what I guessed after studying the manual.

 

[Mr Haney]

What about the screws?

 

[whitetiger]

What about the screws?

The screws???
You mean the bolts that hold the cover? They are 20 ft-lbs

 

[Mr Haney]

Thanks. I called them screws. It's my understanding that bolts to through smooth assemblies into nuts, and screws go into threaded assemblies.

It looks like I did this wrong. Apparently I have to use two nuts on each stud to torque it, remove the nuts without disturbing the studs, and then put the nuts on.

 

[North Idaho Wolfman]

Screws engage a material without threads cut, cast or embedded into material.
Bolts engage a material with threads.
There are exceptions to this "rule" one of which is self tapping bolts.

You don't call then head screws they are head bolts

 

[Mr Haney]

Let's quote the authoritative source so this rabbit hole gets closed off permanently.

From the American Society of Mechanical Engineers:

The ASME B18.2.1 standard defines a bolt as an externally threaded fastener meant for insertion through holes and typically tightened with a nut. It defines a screw as an externally threaded fastener capable of mating with or forming threads and tightened by torquing the head. This distinction has been recognized in a U.S. court

 

[North Idaho Wolfman]

Great now we have a US court ruling on the distinction... I throw in the towel!

 

[Mr Haney]

Great now we have a US court ruling on the distinction... I throw in the towel!

I thought that part was a little weird.

 

[Runs With Scissors]

Bolt

Screw….

Now, the real question…….Since I am not a “Biologist” …...Male or Female????

 

[WI_Hedgehog]

Bolt
Screw….
Now, the real question…….Since I am not a “Biologist” …...Male or Female????

You've strayed from bolts and screws to "nuts."

 

[imarobot]

And then there is the machine screw. What gender would this be?

 

[WI_Hedgehog]

And then there is the machine screw. What gender would this be?

It does look similar to a "Dillon," "all dressed up and nowhere to go," but I would guess Dillon is NPT: not much for looks, and a real pain in the @$$.

 

[Mr Haney]

Personally, I would not name my son after a self-destructive drunk or a guy who couldn't sing.